Piston for internal-combustion engines.



J. D. RUSS.

PISTON FOR INTERNAL COMBUSTION ENGINES.

APPLICATION FINEDAUG. 3, 1912.

1,063,602, Patented June 3, 1913.

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5 HINGE? WITNESSES INVENTO R H r v Jam fi. 5 55 fi m manner:

UNITED STATES PATENT OFFICE.

JOHN D. RUSS, OF SPENCER, WEST VIRG-INIA.

PISTON FOR INTERNAL- COMBUSTION ENGINES.

To all whom it may concern Be it known that I, JOHN D. Ross, :1 citizen of the United States, residing at Spencer, in the county of.Roane and 'State of West Virginia, have invented new and useful Improvements in Pistons for Internal-Combustion Engines, of which the following is a specification.

The object of this invention is to provide a novel form of piston for internal-combustion engines, provided with means whereby perfect lubrication thereof is insured at all times.

With this object in view, the invention resides in the novel construction, combination, and arrangement of parts, as will be hereinafter fully described in the specification, summed up in the claims, and illustrated in the drawing.

In the accompanying drawing, forming part of my'specification, and in which like letters of reference indicate corresponding parts throughout the several views, I have illustrated a form of embodiment capable of carrying out the underlying principles of the invention.

In this drawing: Figure I is a fragmentary, vertical, transverse section of a piston equipped with my improvements; and Fig. II is a horizontal section on the line 22, Fig. 1. Fig. III is a fragmentary sectional view of the piston and its crankshaft. 5

Referring, now, in detail to the drawing: 1 designates the piston, and 2 the piston rod, which is provided with a longitudinallyextending, internal channel or'port 3, for the passage of lubricant therethrough.

4 is a transverse partition carried interiorly of the piston 1, toward the head 1 thereof, and detachably secured to said piston in any suitable manner, as by screws 5. There is thus formed, between said partition andhead, a chamber 6. Projecting through the partition 4 is a lubricant-distributing member, comprising a tube 7- extending through said partition and'having, at its end, radial extensions, or hollow, openended arms, 8. At the bottom, the tube 7 communicates with the end of a flexible tube -9, the other end of which is arranged in communication with the upper end of the port 3. The provision of a tube 9 which is flexible is important, as the flexibility per-' mits continuous communication and passage of lubricant between the tube 7 and the Specification of Letters Patent.

Patented June 3, 1913.

Application-filed August 3, 1912. Serial No. 713,100.

port 3. The circumferential side wall of said chamber 6 is provided with a plurality of apertures 10, extending therethrough. In the chamber 6 is an inverted cup 11 (that is to say, a cup having a circumferential side wall be ring against the circumferential-side Wall of the piston 1, and a bottom wall arranged near to and'parallel with the head 1 of the piston 1). The cup 11 is, as shown, constructed of fora-ruinous, or screen, material. Inside the cup is disposed a body of absorbent material 6 (preferably heat-resisting), adapted to draw lubricant through the channel 3, and tubes 9 and 7, by capillary attraction. The cup 11 is pro vided for particular purposes: First, its function is to constitute a receptacle, readily removable from the piston 1, for the absorbent material 6. As shown, the cup is formed of reticulated, wire-mesh material, which, while preventing the exit of the coarse absorbent material 6 therethrough, permits the oil to escape through the interstices of the ,wire-mesh cup. The absorbent material '6 is thus prevented from penetrating into the'channels 10 in the piston 1, thus choking the same. Secondly, by reason of the provision of this cup, when it is desired to clean or repair 'the interior of the piston 1, all that has-to be done is 'to remove the partition 4, when the cup 11 maybe removed, with the absorbent material therein in 'a body.

The operation is apparent: The -lubricant passes through the channel or port3, through the communicating tubes 9 and 7, into the absorbent material 6, thence out through the openings 10, thus thoroughly lubricating the piston 1, as it reciprocated in its cylinder (not shown).

From the above description, taken in connection with the drawing, the many advantages of my invention will be apparent, especially to those skilled in the art to which the invention appertains.

I am aware that various modifications in detail may be resorted to; but all such as.

come within the terms of the appended claims constitute no departure from the spirit of the invention, and fall within the scope and purview thereof.

The piston 2 is operatively associated, at its lower end, as usual, with its crank-shaft 13. Extending longitudinally and internally of the crank-shaft is a canal 20, having branches 19 and 18, tapped, at appropriate shaft and intersecting said port 18.

points, by screw-plugs 21, 21, 21, by removing which access may be had to the canal for cleaning, or the like.

14 designates a bearing, through which the crank-shaft 13 extends and in which it is rotatably supported. Said bearing carries a lubricant-cup 15 communicating with a passage 16 extending vertically from the periphery of said bearing to the longitudinal bore thereof. The portion of the crankshaft 13 which is within the bearing l4c-is provided with a circumferential groove 17*, communicating with a plurality of ports 17, extending transversely through said cranlllr T e lower portion of the port 3 is provided with an annular extension 2 surrounding the crank shaft 13, and communicating with such extension is a plurality of passages 22 extending through the crank-shaft and intersecting the passage 20. In the operation of the engine, the lubricant passes from the cup 15 through the ports 16, 17, 18, 19, 20, and 22 into the extension 2, and thence into the port 3.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters-Patent of the United States is:

1. .In a piston, a partition carried trans' versely therewithin, near one end thereof, forming a chamber therebet-ween and the head of the piston, said chamber having apertures through the circumferential side wall thereof, a cup-shaped member disposed within said chamber and formed of reticulated, wire-mesh material, and a bod of absorbent material contained within said cup-shaped member.

2. In a piston, a partition carried transversely therewithin, near one end thereof, forming a chamber therebetween and the head of the piston, said chamber having apertures through the circumferential side wall thereof, a cup-shaped member disposed withinsaid chamber and formed of reticulated, wire-mesh material, a body of absorbent material contained within said cupshaped member, and means projecting through said partition for supplying lubricant to said absorbent material.

3. In a piston, a partition carried transversely therewithin, near one end thereof, forming a chamber therebetween and the head of the piston, said chamber having apertures through the circumferential side wall thereof, a cup-shaped member disposed within said chamber and formed of reticulated, wire-mesh material, a body of absorbent material contained Within said cupshaped member, a piston-rod having an internal, longitudinally-extending lubricantpassage, and means for supplying lubricant from said lubricant-passage to said absorbent material, comprehending a flexible tube projecting through said partition and comi municating with said lubricant-passage.

4. In a piston, a partition carried transversely therewithin, near one end thereof, forming a chamber therebetween and the head of the piston, said chamber having apertures through the circumferential wall thereof, a cup-shaped member disposed within said chamber and formed of reticulated, wire-mesh material, a body of absorbent material contained within said cupshaped member, and a lubricant-distributing member also disposed within said cup-shaped member, and comprising a tube projecting through said partition and having, at its end, radial, hollow, open-ended arms.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

JOHN D. RUSS.

Witnesses:

J. H. CAMP, GILES EDWARDS. 

